I use Brave and have had none of these problems, and I have Windows 10.
There must be a setting in Brave that you need to look at ..............
you have no problems with the updates?
This is the second time MS update has wiped my passwords.
Interestingly the browser acts hinky while it is waiting for the go ahead to update that I postpone.
None of them ever lose passwords upon updates. You have settings out of whack somewhere.
Today I got a red alert that my Win10 is nearing the end of its life and I need to download a newer version.
My laptop has been BSODing like crazy lately and this new “version “ alert terrifies me.
I hope they don’t expect me to pay for it.
I didn’t want 10 in the first place but there’s no 7 drivers for all the hardware.